Fig. 2

Correlations between fixel metrics and NVFIQ, derived from the dimensional analysis of the entire study cohort. Upper block – Panels a–c show the fixels where the correlation of log(FC) and Leiter-R’s nonverbal full-scale IQ (NVFIQ) reach statistical significance from the coronal, sagittal, and transverse view, respectively. A zoomed image of c is displayed with the green dashed border. Fixels are colored in red for P-FWE < 0.05; fixels colored in blue indicate P-FWE < 0.1 and are used to assist identification of the associated brain structure. d The scatter plot shows the residuals of the mean log(FC) on the vertical axis and of the normalized NVFIQ on the horizontal axis. Only all fixels that reach P-FWE < 0.05 are considered in the plot. Lower block – The format in Panels e–h is the same as the upper block, except that the results are obtained from the analysis of FDC and NVFIQ. Acronyms – R Right, L Left, P-FWE Family-wise error corrected P value